Iodine Statues in blood and milk of Isfahan dairy cattle farms
Subject Areas : Journal of Large Animal Clinical Science Research(JLACSR)
Keywords: dairy cows, Milk, blood, Iodine,
Abstract :
Iodine is an essential trace element for dairy cattle. Recent studies in Iran showed that endemic goiter is prevalent in many parts of Iran as well as Isfahan. In the winter, and summer, 11 dairy farms from different geographical reigns in Isfahan were selected randomly for iodine status study. Blood, and milk samples were collected from 135 milking cows in the summer, and 162 cows in winter. A total number of 367 blood samples, and 267 milk samples were collected. Lactating cows that were in a similar condition were selected for this study. The total plasma (or serum) iodine, and iodine in milk were assayed by the Sandell-Kolthoff reaction. The results of this study showed that, Iodine in blood ranged from (Minimum) 9.93 μg/l to 46.15 μg/l (Maximum) in winter and from 17.9 μg/l (Minimum) to 56.17 μg/l (Maximum). The result of this study showed that, milk iodine level was not a good index for iodine statues in dairy cattle; it was very variable because of teat dipping during every milking. This study indicated that imputes of common mineral supplements could not adequately provide iodine for dairy cattle diet in these farms.
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